About 555 EUCRiders

sr71 riding an EUC on a trail near Olsztyn

sr71

I’m sr71. I ride electric unicycles in and around Olsztyn, Poland - a region packed with lakes, forests, and trails that make you want to keep going.

The name comes from the Lockheed SR-71 Blackbird - the fastest manned aircraft ever built. 85,069 feet ceiling, Mach 3.5+, thirty-four years of operational service, and nobody ever caught it. It’s a masterpiece of engineering and human ambition. That same respect for serious engineering is what drives 555.

You can find me on YouTube and Instagram as sr71_adrenaline.

How it started

I wanted a vehicle to explore the area around Olsztyn - lakes, forests, nature. Solo or with company. Just ride and discover.

I wasn’t thinking about electric unicycles at all. I bought an e-scooter, figured it would do the job. It didn’t. The range disappointed me, the ride disappointed me - and it wasn’t a cheap one either.

So I had a choice: go all-in on a top-tier e-scooter, or take a chance on something completely unknown. In the meantime, my son - ten years old at the time, in 2022 - got a Ninebot S2, a basic self-balancing device to play around with. Watching him ride it planted a seed.

I chose the unknown.

LeaperKim Sherman Max - first EUC

I took two hours of riding lessons. After about ninety minutes I could ride on my own. Then I bought my first real wheel - a LeaperKim Sherman Max (June 2022). Not a beginner wheel. A destination wheel - something I wouldn’t outgrow in a month.

After 100 meters I fell, broke a toenail, and kept riding. That’s how it goes.

Three months later I bought a Begode Monster Pro (October 2022). Everyone said it was a bad wheel. I loved it. The feeling of a big wheel - the stability, the comfort, the sense of effortless cruising - that changed everything for me. I did my first 200 km (124 mi) ride on that wheel. No suspension, exhausting, and I’d do it again. I still have a soft spot for that machine.

That wheel also took me to the first Polish Electric Vehicle Championships in June 2023 - the only Monster Pro on the track, running custom cooling I designed myself to handle ~25°C (77°F) race conditions. I finished 5th out of 17 riders in the 100+ volt unicycle category, as a heavy rider - at times nearly twice the weight of the riders ahead of me (2x KingSong S22, Sherman Max, Sherman S). A GT-class touring wheel had no business being that close to dedicated race setups - but the Monster Pro didn’t care, and neither did I.

Riding through Masuria - lakes, forests, gravel trails

After that came the Begode Master (June 2023), the Begode Master Pro V3 (April 2024), the Begode Extreme (August 2024), and the Extreme Bull GT Pro+ (April 2025). Not each one bigger, not each one built for touring. Each one different - different strengths, different riding character. But all serious machines.

Remember the kid on the Ninebot S2? In 2024, at twelve years old, he was riding a Begode Master in full protection gear. In May 2024 we did a 500 km (310 mi) father-son route through Masuria in 3 days - lakes, forests, and trails on Begode Master Pro V3 and Begode Master side by side. Probably the only kid in Poland - maybe in Europe - riding at this level. Off the wheel he’s a StarCraft Zerg main. On the wheel he keeps up with his old man. The Ninebot planted a seed. It grew.

In 2026, that same story reached the Polish Championships. On the Extreme Bull GT Pro+ with my own custom cooling system - built more out of reliability obsession than necessity - I took gold and finished 1st. That is 555 in one sentence: real riding, real load, owner-built modifications, and testing the machine where marketing talk runs out of road.

At the same championships, my son raced a Begode Race 210V in the EUC PRO category. On the straights he was matching an Inmotion P6 during the race - and when the track gave them room for clean speed, the Race was faster. Later, in Drag Race, he won the EUC category, took gold, and finished 1st. That kid from the Ninebot S2 is not just keeping up anymore. He is racing for real.

Why 555

In late 2023, Begode showed the Master Pro V3 with Samsung 50S cells. The specs:

5 kW. 5 kWh. 50+ kg. That’s 555.

At the time, maybe one or two wheels on the planet met that standard. It wasn’t about GT-class labels or marketing categories. It was about what those numbers mean in practice:

Weight is inertia. A spinning rotor is a gyroscope. Both together - stability. A 50+ kg (110+ lbs) machine doesn’t change direction on a whim. Wind doesn’t push it around. Rough surfaces don’t throw it off. Add a large rotor at cruising speed and you get a wheel that tracks straight on its own - it absorbs, stabilizes, forgives. For hours. Add 5 kW of power reserve and 5 kWh of battery - and you have a machine built for serious distance.

That was the idea. I started tagging everything #555EUCRiders - posts on Facebook, Instagram, everywhere. I set up a Facebook group and a Telegram group. Those didn’t take off, and honestly that was fine - I didn’t have time to manage active communities anyway. But the hashtag stuck, and the idea behind it stuck harder.

Now it’s a full website. A knowledge platform built around the things I wish I had when I started riding - honest specs, real-world data, tools that calculate instead of guess, and articles that explain the engineering instead of just hyping products.

Two EUC wheels resting on a bench

What this site is

555 EUCRiders™ is a one-person project. No sponsors, no affiliate links, no brand deals. The content is written the way I’d explain things to a friend in the garage with a wheel torn apart - direct, specific, with an opinion. If something is bad, I say it’s bad. If something is the best option for beginners, I say that too.

The site covers:

555 is currently published in English and Polish. English opens the project to the global EUC community. Polish is my native language - this is where 555 was born, where the first championships happened, and where every trail in this story starts.

German and Chinese editions remain preserved. They are not active publication languages today. A 555 language is either maintained with sources, updates, corrections, and the 555 voice - or it does not publish publicly.

Support the project

“Charge my battery” means sending a voluntary tip to support 555 EUCRiders content - hosting, tools, research, and future EUC articles.

No physical goods are sold. Payments are processed via Buy Me a Coffee.

Contact

Spotted something wrong, got data to share, or just want to talk wheels? Use the contact page.

Ride safe. Ride far. #555EUCRiders